Typewriting machine



Aug 10 1926. 1,595,162

' w. o. MICHELSEN TYPEWRITING MACHINE Filed Feb. 10, 1926 Patented Aug. 10, 1926.

UNITED STATES PATENT OFFICE.

WILLIAM O. MICHELSEN, OF WOODEAVEK', NEW YORK, AS8IGNOB.TO ROYAL TYPE- WRITER COMPANY, ING, 01 NEW YORK, N. Y., A. CORPORATION 01' NEW YORK.

TYPEWBITING MACHINE.

Application fled February 10, me. sem m. 07,334.

This invention relates to condensed billing devices for use on typewritingfand similar machines. Although illustrated in connection with the well knownRoyal machine, it is not limited in its use thereto,

but can be applied to any of the ordinary typewriting machines. Also although it is described. in connection with a machine having the usual cylindrical platen, the invention may be employed with machines having a'difi'erent form of platen or with machines such as the Hammond, which I have no platen in the usual sense of the term.

As is well known, condensed billing devices are for the purpose of permitting the operator to write a series of bills which are introduced into the machine one at a time and removed after the writing of one or more lines thereon and at the same time to make a condensed record upon a record sheet which remains constantly in the machine. In the usual form of such devices, after the writing of a bill, is completed the platen'or'paper feed mechanism is given a backward movement sufficient to bring the completed bill to a position from which it can be readily removed. The next bill is then inserted and the platen or paper feeding mechanism given a reverse movement to bring the new bill to proper position for the writing of the first linev thereon. Suitable stop mechanism is provided for limiting the movement in each direction and it is essential that the mechanism be so arranged that the forward movement of the platen or paper feeding devices shall be sufficient to make the proper space between the last previous entry on the record sheet andthe next entry which corresponds to the first line written on the bill just introduced.

The invention herein disclosed comprises mechanism for attaining this result in a rapid and efficient manner, which mechanism is simple in construction and accurate in operation.

In the drawings:

Figure 1 is a side elevation with parts The drawings disclose the conventional .platen A having a shaft B mounted in the side frames 0 of the carriage, only one of which is illustrated. Both ends of the shaft B are provided with finger pieces D,

each-carried by to said shaft.

Outside of the carriage frames 0 the platen shaft is provided with asleeve 1 upon which is journalled for rotation relativel thereto a disk member 2. This disk mem er is prevented from movement by means of a stud 3, one end of which fits in an opening in the disk while the other end passes throu h the side frames C of the carriage andis eld by a nut or suitable fastening 4. This end 1s made eccentric so that the exact position of the disk -2 with reference to the line space ratchet wheel may be adjusted by slightly turning the stud 3. The disk 2 is provided near its geriphery with a series of openings 5 which 0 not. extend entirely therearound. Journalled on the sleeve 1 is an arm 6 which is provided at one end with a sprin pressed lunger 7 the end of which is a apted to fit into one or the other of the openings 5. This plunger acts as a stop or the movement of the lever, hereinafter described, in one direction and the extent of throw of the paperby the mechanism may be varied by a justin the spring pressed plunger in the desire opening 5.

Fast to the platen axle B and lying just outside the (1181! 2, is a. ratchet or tooth a sleeve E which is fastened member 8. well as the opening 5 in the disk'2 correspond in number with the teeth in the line space ratchet. A handle 9. provided with a hub 10 is journalled on the platen shaft to rotate freely thereon. Intermediate its ends it is provided with an offset 12 upon which is pivoted by means of a stud 11, a pawl member 13. This pawl member is adapted to be brought into engagement with the teeth of the ratchet member 8 and when in such engagement'a movement of the lever 9 in either direction will result in turning the platen. The pawl member is provided intermediate its ends with a cam shaped slot having a dwell at each end and a pin 15 carried by a lever 16 projects into said slot. This lever 16 is pivoted to the handle 9 at the point 17 and the other end has an upturned ear 18 to which is attached one end of a spring 19, the other end of which is attached to the stud 11. The parts are so arranged that when the lever 16 is moved from one position to another, the pin 15 will take up the position in one or the other dwell portions of the slot 1 1 and the spring 19 will tend to holdthe members in either of these positions.

When the handle 9 is in its rearmost position, as illustrated in Figure 2 and in dotted lines in Figure 1, the pin 15 lies in the dwell portion of the slot nearest to the end of the pawl 13 and the pawl is held out of engagement with the ratchet teeth 8. If the lever 16 is moved to bring the pin 15 into the opposite end of the slot 14, as shown in the intermediate dotted line position of Figure 1, the pawl will then be forced into engagement with the teeth of the ratchet 8, thus connecting the handle 9 to the platen. The engagement and disengagement of the pawl with the ratchet member 8 is brought about in the following manner: On the outer face of the disk 2 is provided a stop 21 or trip, which is practically circular in form, and a second stop or trip 22, which has a form such as shown in igure 5, having a straight open ating face. Assuming the parts to be in the osition shown in Figure 2, the handle 9 Wlll be moved toward the right for the purpose of giving the platen a backward rotation. The initial portion of this movement of the lever will be an idle movement, since the pawl is not in engagement with the ratchet 8. As soon as a portion of this idle movement is completed, the pin 15 will come in contact with the pin 21 and will ride over the outer edge thereof, as shown in the dotted line position of Figure 1, thus moving the lever 16 and throwing the pin 15 into the opposite end of the cam slot 14, thereby bringing the teeth of the pawl into engagement with the ratchet 8.

The teeth of this member as"Tl1e lever 9 is then connected to the platen and acontinued forward movement will result in the rotation of the platen backwardly. The extent of this rotation will be determined by the previous setting of the spring pressed member '4'. When the forward movement of the lever 9 has been completed, it will occupy the full line position of Figure 1. v The bill which has been completed will then be removed and a new bill inserted. a reverse movement and the forward rotation of the platen will begin immediately, since the pawl and ratchet are in engagement. ()n this reverse rotation, the pin 15 will pass outside the stop member 21 without contacting therewith and the pawl and ratchet will remain in engagement until the pin 15 comes against the stop member 22, whereupon it will be moved, thus moving the lever 16 and bringing the parts to the position shown in Figure 2, where the pawl is again disengaged from the ratchet. It will be noted that this movement will be of a greater extent than was the forward movement in the lever so that the platen will be rotated forwardly a greater distance than it was rotated rearwardly. The amount of this excess movement is predetermined by the distance of the stops 21 and 22, but is usually set for two line space distance. By making either the stop 21 or 22 adjustable, this distance may be varied as desired. It is obvious, therefore, that the new bill will be brought to 3 position to begin writing thereon but that the condensed record sheet will be moved two spaces farther so that a proper space will be made between the last entry thereon and the first entry on the new bill.

The pawl 13, lever 16, and associated parts, may be enclosed in a housing member 20 attached to the handle 9 in any suitable manner. It is obvious that where the invention is applied to a machine such as the Hammond which has no platen, properly speaking, it would be necessary to apply the rotating mechanism to a feed roll shaft instead of the platen shaft. In all such variations, the fundamental principle of the invention would be the same. It is obvious that other detail changes may be made without in any way departing from the spirit of the invention and the device may be applied to typewritting machines, combined typewriting and computing machines, or other machines wherein it is desired to form this character of operation. The invention is, therefore, to be regarded as limited only by the scope of the appended claims.

I claim:

1. Condensed billing mechanism comprising a rotary member, an oscillating handle, cooperating elements carried respectively The lever 9 will then be given ing a rotary member, a' ratchet movable therewith, an oscillating handle, a pawl carried thereby, a movable device on said handle adapted to move the pawl, and means for moving said device to engage or dis-- engage the pawl and ratchet as the handle is oscillated.

3. Condensed billing mechanism comprising a rotary member, a ratchet. movable therewith, an oscillating handle, a pawl carried thereby, a movabledevice'on said handle adapted to move the pawl, and fixed elements for moving said device to engage or disengage the pawl and ratchet as the handle is oscillated.

at. Condensed billing mechanism comprising a rotary member, a ratchet movable therewith, an oscillating handle, a pawl carried thereby, a movable device on said handle adapted to move the pawl, and a trip to move said device to engage the pawl and ratchet on one movement of the handle.

5. Condensed billing mechanism comprising a rotary member, a ratchet movable therewith, an oscillating handle, a pawl carried thereby, a movable device on said handle adapted to move the pawl, and a stop to move said device to disengage the pawl and ratchet on one movement of the handle.

6. Condensed billing mechanism comprising a rotary member, a ratchet movable therewith, an oscillating handle, a pawl carried thereby, a movable device on said handle adapted to move the pawl, a trip device to move said device to engage the pawl and ratchet on vone movement of the handle,

and a stop to move said device to disengage the pawl and ratchet on the reverse move ment of the handle.

7. Condensed billing mechanism comprising a rotary member, a ratchet member movable therewith, an oscillating handle, a pawl pivoted thereto, a lever also pivoted to the handle and engaging the pawl to determine its operative and inoperative positions, and means for moving said lever as the handle is oscillated.

8. Condensed billing mechanism eompris ing a rotary member, a ratchet member movable therewith, an oscillating handle, a pawl pivoted thereto and adapted to engage the ratchet, said pawl having a cam' slot therein, a lever also pivoted to the handle and having a pin engaging in said slot, and means for moving the lever as the handle is oscillated. 9. Condensed billing mechanism comprising a rotary member, a ratchet IDGTHlJQI' movable therewitih, an oscillating handle, a pawl pivoted thereto and adapted to engage the ratchet, said pawl having a cam slot therein, a lever also pivoted to the handle and having a pin engaging in said slot, and means for moving the pin to one end of the slot to engage the pawl and ratchet, or to the other end of the slot to disengage the pawl and ratchet.

10. Condensed billing mechanism comprising a rotary member, a ratchet member movabie therewith, an oscillating handle, a pawl pivoted thereto and adapted to engage the ratchet, said pawl having a cam slot therein,

- a lever also pivoted to the handle and having a pin engaging in said slot, and a trip for moving the pin to one end of the slot to engage the pawl and ratchet on 'movement of the handle in one direction, said pin passing said trip on the return movement.

l1. Condensed billing mechanism comprising a rotary member, a ratchet member movable therewith, an oscillating handle, a pawl pivoted thereto and adapted to engage the ratchet, said pawl having a cam slot therein, a leveralso pivoted to the handle and having .a pin engaging in said slot, a trip for moving the pin to one end of the slot to engage the pawl and ratchet on movement ofthe handle in one direction, and a combined trip and stop for moving said pin to theother end of the slot on the return move,- ment of the handleto disengage the pawl and ratchet.

12. Condensed billing mechanism compris ing a rotar member, an oscillating handle a fixed disk, an adjustable stop positioned by said disk to limit the movement of the handle in one direction, cooperating elements carried respectively by the rotary member and the handle, movable means on said handle to move the handle-carried element to two positions, and trip members on said disk for operating said movable means.

13. Condensed billing mechanism comprising a rotary member, an oscillating handle a fixed disk, an adjustable stop positioned by said disk to limit the movement of the handle in one direction, cooperating elements carried respectively by the rotary member and the handle, movable means on by said disk to limit the movement of the handle in one direction, cooperating elements carried respectively by the rotary member and the handle, movable means on said handle to move the handle-carried element to two positions, spring'means for holding said element in either position, and

trip members on said disk for movable means.

15. Condensed billing mechanism comprising a rotary member, an oscillating driver, cooperating elements carried respectively by said member and driver, and fixed devices for positively engaging and disengaging said cooperating elements as the driver is oscillated.

16. Condensed billing mechanism comprising a rotary member, an oscillating driver,

operating said cooperating elements carried respectively by said member and driver, a controlling device for one of said elements carried by said driver, and fixed devices for operating said controlling device as the driver. is oscillated to engage and disengage the cooperating elements.

In testimony whereof, I have hereunto subscribed my name.

WILLIAM o. MICHELSEN. 

